Levonorgestrel, 100µg/mL in Acetonitrile, 1ml Back Catalog number: A14629760AL-100 Availability: In the manufacturer's stock Price on request - + Recommended 92345 Surrogate Standard Price on request M4PFHPA Perfluoro-n-[1,2,3,4-13C4]heptanoic acid, 50µg/ml in MeOH, 1,2ml Price on request 0347.18-K-T p-Terphenyl, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 92-94-4 Price on request